Bag



FIG. 1 is a top view.

FIG. 2 is a bottom view.

FIG. 3 is a right side view in an opened position; and,

FIG. 4 is a left side view.

The broken lines shown on the views of FIGS. 2 and 3 represent stitchingand are part of the claimed design.

The ornamental design for a bag, as shown and described.